how to set defult number in getPagerOptions in grid

[amirkian]

I added this lines of code to my grid

       protected getPagerOptions() {
            let opt = super.getPagerOptions();
            //Options in the dropdown
            opt.rowsPerPageOptions = [25];
  
 
            return opt;
        }

as you can see the dropdown hasn't any default value.How can I set default value no to be show empty in the dropdown

[minhhungit]

hi @amirkian as I know at this time there are only 4 values you can use [20, 100, 500, 2000]